Graeme Geldenhuys wrote in a message to Mike Bilow:

 MB> IOCD_CLOSE_TRAY (0x45).  What OS2CDROM.DMD actually does in receipt of
 MB> this IOCtl is issue a SCSI START UNIT command to the device.  If your
 MB> drive is not SCSI, then it is the responsibility of the appropriate
 MB> FLT driver to translate the command into something specific to your
 MB> hardware.

 GG> I have a CD-ROM drive that plugs into my SBPRO card (not and
 GG> IDE or SCSI). I also tried this on IDE CD-ROM drives and no
 GG> luck there either... 

This should work.  Post some code and we'll see if we can figure it out.
 
-- Mike


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